From f613a1e4e004dd03d7de80ea5a45bee71d3a3454 Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Fri, 03 Oct 2008 04:25:20 -0400
Subject: [PATCH] - fix last change in show_bytes()

---
 program/include/rcube_imap.php |  187 +++++++++++++++++++++++++++++-----------------
 1 files changed, 118 insertions(+), 69 deletions(-)

diff --git a/program/include/rcube_imap.php b/program/include/rcube_imap.php
index 439c556..fa4cae5 100644
--- a/program/include/rcube_imap.php
+++ b/program/include/rcube_imap.php
@@ -166,6 +166,10 @@
     {
     $this->close();
     $this->connect($this->host, $this->user, $this->pass, $this->port, $this->ssl);
+    
+    // issue SELECT command to restore connection status
+    if ($this->mailbox)
+      iil_C_Select($this->conn, $this->mailbox);
     }
 
 
@@ -1013,7 +1017,7 @@
    * an object structure similar to the one generated by PEAR::Mail_mimeDecode
    *
    * @param int Message UID to fetch
-   * @return object stdClass Message part tree or False on failure
+   * @return object rcube_message_part Message part tree or False on failure
    */
   function &get_structure($uid)
     {
@@ -1053,7 +1057,7 @@
       if ($this->caching_enabled)
         $this->add_message_cache($cache_key, $msg_id, $headers, $struct);
       }
-      
+
     return $struct;
     }
 
@@ -1178,8 +1182,6 @@
     {
     if (!empty($part->d_parameters['filename']))
       $filename_mime = $part->d_parameters['filename'];
-    else if (!empty($part->ctype_parameters['name']))
-      $filename_mime = $part->ctype_parameters['name'];
     else if (!empty($part->d_parameters['filename*']))
       $filename_encoded = $part->d_parameters['filename*'];
     else if (!empty($part->ctype_parameters['name*']))
@@ -1194,65 +1196,69 @@
 	}
       // some servers (eg. dovecot-1.x) have no support for parameter value continuations
       // we must fetch and parse headers "manually"
+      //TODO: fetching headers for a second time is not effecient, this code should be moved somewhere earlier --tensor
       if ($i<2) {
         // TODO: fetch only Content-Type/Content-Disposition header
-        $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
-	$filename_mime = '';
-	$i = 0;
-	while (preg_match('/filename\*'.$i.'\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
-	  $filename_mime .= $matches[1];
-	  $i++;
-	  }
-        } 	
+        $headers = iil_C_FetchPartHeader($this->conn, $this->mailbox, $this->_msg_id, $part->mime_id);
+        $filename_mime = '';
+        $i = 0;
+        while (preg_match('/filename\*'.$i.'\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
+          $filename_mime .= $matches[1];
+          $i++;
+        }
       }
+    }
     else if (!empty($part->d_parameters['filename*0*'])) {
       $i = 0;
       while (isset($part->d_parameters['filename*'.$i.'*'])) {
         $i++;
-	$filename_encoded .= $part->d_parameters['filename*'.$i.'*'];
-	}
-      if ($i<2) {
-        $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
-	$filename_encoded = '';
-	$i = 0;
-	while (preg_match('/filename\*'.$i.'\*\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
-	  $filename_encoded .= $matches[1];
-	  $i++;
-	  }
-        } 	
+        $filename_encoded .= $part->d_parameters['filename*'.$i.'*'];
       }
+      if ($i<2) {
+        $headers = iil_C_FetchPartHeader($this->conn, $this->mailbox, $this->_msg_id, $part->mime_id);
+        $filename_encoded = '';
+        $i = 0; $matches = array();
+        while (preg_match('/filename\*'.$i.'\*\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
+          $filename_encoded .= $matches[1];
+          $i++;
+        }
+      }
+    }
     else if (!empty($part->ctype_parameters['name*0'])) {
       $i = 0;
       while (isset($part->ctype_parameters['name*'.$i])) {
         $i++;
         $filename_mime .= $part->ctype_parameters['name*'.$i];
-	}
-      if ($i<2) {
-        $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
-	$filename_mime = '';
-	$i = 0;
-	while (preg_match('/\s+name\*'.$i.'\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
-	  $filename_mime .= $matches[1];
-	  $i++;
-	  }
-        } 	
       }
+      if ($i<2) {
+        $headers = iil_C_FetchPartHeader($this->conn, $this->mailbox, $this->_msg_id, $part->mime_id);
+        $filename_mime = '';
+        $i = 0; $matches = array();
+        while (preg_match('/\s+name\*'.$i.'\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
+          $filename_mime .= $matches[1];
+          $i++;
+        }
+      }
+    }
     else if (!empty($part->ctype_parameters['name*0*'])) {
       $i = 0;
       while (isset($part->ctype_parameters['name*'.$i.'*'])) {
         $i++;
         $filename_encoded .= $part->ctype_parameters['name*'.$i.'*'];
-	}
-      if ($i<2) {
-        $headers = iil_C_FetchPartBody($this->conn, $this->mailbox, $this->_msg_id, $struct->mime_id.'.HEADER');
-	$filename_encoded = '';
-	$i = 0;
-	while (preg_match('/\s+name\*'.$i.'\*\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
-	  $filename_encoded .= $matches[1];
-	  $i++;
-	  }
-        } 	
       }
+      if ($i<2) {
+        $headers = iil_C_FetchPartHeader($this->conn, $this->mailbox, $this->_msg_id, $part->mime_id);
+        $filename_encoded = '';
+        $i = 0; $matches = array();
+        while (preg_match('/\s+name\*'.$i.'\*\s*=\s*"*([^"\n;]+)[";]*/', $headers, $matches)) {
+          $filename_encoded .= $matches[1];
+          $i++;
+        }
+      }
+    }
+    // read 'name' after rfc2231 parameters as it may contains truncated filename (from Thunderbird)
+    else if (!empty($part->ctype_parameters['name']))
+      $filename_mime = $part->ctype_parameters['name'];
     // Content-Disposition
     else if (!empty($part->headers['content-description']))
       $filename_mime = $part->headers['content-description'];
@@ -1262,12 +1268,15 @@
     // decode filename
     if (!empty($filename_mime)) {
       $part->filename = rcube_imap::decode_mime_string($filename_mime, 
-    	    $part->charset ? $part->charset : rc_detect_encoding($filename_mime, $this->default_charset));
+        $part->charset ? $part->charset : rc_detect_encoding($filename_mime, $this->default_charset));
       } 
     else if (!empty($filename_encoded)) {
       // decode filename according to RFC 2231, Section 4
-      list($filename_charset,, $filename_urlencoded) = split('\'', $filename_encoded);
-      $part->filename = rcube_charset_convert(urldecode($filename_urlencoded), $filename_charset);
+      if (preg_match("/^([^']*)'[^']*'(.*)$/", $filename_encoded, $fmatches)) {
+        $filename_charset = $fmatches[1];
+        $filename_encoded = $fmatches[2];
+        }
+      $part->filename = rcube_charset_convert(urldecode($filename_encoded), $filename_charset);
       }
     }
      
@@ -1279,9 +1288,10 @@
    * @param  string Part number
    * @param  object rcube_message_part Part object created by get_structure()
    * @param  mixed  True to print part, ressource to write part contents in
+   * @param  resource File pointer to save the message part
    * @return string Message/part body if not printed
    */
-  function &get_message_part($uid, $part=1, $o_part=NULL, $print=NULL)
+  function &get_message_part($uid, $part=1, $o_part=NULL, $print=NULL, $fp=NULL)
     {
     if (!($msg_id = $this->_uid2id($uid)))
       return FALSE;
@@ -1314,7 +1324,10 @@
       }
     else
       {
-      $body = iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, $part, 1);
+      if ($fp && $o_part->encoding == 'base64')
+        return iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, $part, 3, $fp);
+      else
+        $body = iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, $part, 1);
 
       // decode part body
       if ($o_part->encoding)
@@ -1329,8 +1342,14 @@
 
         $body = rcube_charset_convert($body, $o_part->charset);
         }
+      
+      if ($fp)
+        {
+        fwrite($fp, $body);
+        return true;
+        }
       }
-
+    
     return $body;
     }
 
@@ -1366,6 +1385,23 @@
     $body .= iil_C_HandlePartBody($this->conn, $this->mailbox, $msg_id, NULL, 1);
 
     return $body;    
+    }
+
+
+  /**
+   * Returns the message headers as string
+   *
+   * @param int  Message UID
+   * @return string Message headers string
+   */
+  function &get_raw_headers($uid)
+    {
+    if (!($msg_id = $this->_uid2id($uid)))
+      return FALSE;
+
+    $headers = iil_C_FetchPartHeader($this->conn, $this->mailbox, $msg_id, NULL);
+
+    return $headers;    
     }
     
 
@@ -1458,7 +1494,7 @@
     $mailbox = $this->_mod_mailbox($mbox_name);
 
     // make sure mailbox exists
-    if (in_array($mailbox, $this->_list_mailboxes()))
+    if (($mailbox == 'INBOX') || in_array($mailbox, $this->_list_mailboxes()))
       $saved = iil_C_Append($this->conn, $mailbox, $message);
 
     if ($saved)
@@ -2416,32 +2452,45 @@
    */
   function decode_mime_string($input, $fallback=null)
     {
+    // Initialize variable
     $out = '';
 
-    $pos = strpos($input, '=?');
-    if ($pos !== false)
-      {
-      // rfc: all line breaks or other characters not found 
-      // in the Base64 Alphabet must be ignored by decoding software
-      // delete all blanks between MIME-lines, differently we can 
-      // receive unnecessary blanks and broken utf-8 symbols
-      $input = preg_replace("/\?=\s+=\?/", '?==?', $input);
+    // Iterate instead of recursing, this way if there are too many values we don't have stack overflows
+    // rfc: all line breaks or other characters not found 
+    // in the Base64 Alphabet must be ignored by decoding software
+    // delete all blanks between MIME-lines, differently we can 
+    // receive unnecessary blanks and broken utf-8 symbols
+    $input = preg_replace("/\?=\s+=\?/", '?==?', $input);
 
-      $out = substr($input, 0, $pos);
-  
-      $end_cs_pos = strpos($input, "?", $pos+2);
-      $end_en_pos = strpos($input, "?", $end_cs_pos+1);
-      $end_pos = strpos($input, "?=", $end_en_pos+1);
-  
-      $encstr = substr($input, $pos+2, ($end_pos-$pos-2));
-      $rest = substr($input, $end_pos+2);
+    // Check if there is stuff to decode
+    if (strpos($input, '=?') !== false) {
+      // Loop through the string to decode all occurences of =? ?= into the variable $out 
+      while(($pos = strpos($input, '=?')) !== false) {
+        // Append everything that is before the text to be decoded
+        $out .= substr($input, 0, $pos);
 
-      $out .= rcube_imap::_decode_mime_string_part($encstr);
-      $out .= rcube_imap::decode_mime_string($rest, $fallback);
+        // Get the location of the text to decode
+        $end_cs_pos = strpos($input, "?", $pos+2);
+        $end_en_pos = strpos($input, "?", $end_cs_pos+1);
+        $end_pos = strpos($input, "?=", $end_en_pos+1);
 
-      return $out;
+        // Extract the encoded string
+        $encstr = substr($input, $pos+2, ($end_pos-$pos-2));
+        // Extract the remaining string
+        $input = substr($input, $end_pos+2);
+
+        // Decode the string fragement
+        $out .= rcube_imap::_decode_mime_string_part($encstr);
       }
 
+      // Deocde the rest (if any)
+      if (strlen($input) != 0)
+         $out .= rcube_imap::decode_mime_string($input, $fallback);
+
+       // return the results
+      return $out;
+    }
+
     // no encoding information, use fallback
     return rcube_charset_convert($input, 
       !empty($fallback) ? $fallback : rcmail::get_instance()->config->get('default_charset', 'ISO-8859-1'));

--
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